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Discussion Starter · #1 ·
Since my cheap Hanna hand meter even with expensive fresh batteries and calibration solution is useless after only a few months of use and their warranty and customer service is nonexistent, I wanted to buy another pH meter especially now that I have a few tanks going. During my recent ebaY trolling, I noticed this new Asian import item popping up from a few sellers. anyone care to comment pro/con on buying this thing?



For Aquarium, Swimming Pool, Spa, Laboratory & Hospital etc

Features:
Reliable and stable reading
With 1 metre cable from meter to sensor
Easy operation with switch button
Easy to carry

Specifications:
PH Range: 0.00-14.00pH
PH Resolution: 0.01pH
Accuracy: +/- 0.1pH (at 20 deg. C or 68 deg. F)
Batteries: 4 X 1.5 V (AG13 Button Battery )
Environment: 0 - 50 degree C (32 -122 degree F)
Dimensions: 60mm x 55mm x 23mm
Calibration; screw driver provided
Weight: 75g
Power Supply : 1.5V Batteries x 4 (Included) or Power adaptor (included)

Operation:
Remove the protective cap.
First rinse the electrode with distilled water, and suck it with filter-paper.
Turn on pH meter by ON/OFF switch located on the top of battery case.
Immerse the sensor electrode in the solution to be tested.
Wait for the reading to stablilize

Package:
PH meter with probe
batteries installed (1.5V) x 4
Power adaptor for US
 

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why would i need to replace the electrode?
I know I have to clean and recalibrate it,
but what wears it out, and how quickly?
Even if it does wear out, this unit is still cheaper than a PinPoint pH probe.
 

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I wasnt thinking of it wearing out but just getting broken in general.
My SMS 122 uses a BNC connector for the probe. In the booklet it mentioned it always had to be in water and it could be broken.

It is glass, you could accidentally drop it or whatever. I was thinking it would be cheaper to replace the electrode rather than the whole unit.
 

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I just bought my new electrode for $73...

Considering even my Ph test kit with the drops and test tubes goes for $5, and a drop checker will cost you $15-$30 - I think it is worth a shot.
 

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Discussion Starter · #7 ·
seems to work consistently, so it may be worth the $32 to some.
my water tends to get acidic, so I needed this as a pH reminder.
it only comes with 7pH calibration, not 4/10pH; this may not work
with cichlids as readings get less accurate that far from neutral.

 

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Discussion Starter · #9 ·
no, you misunderstand.
a better pH meter has a separate screw set for 4/10 calibration.
without it, using 4pH or 10pH solution on this meter is pointless.
without 4/10 calibration capability, such a meter becomes less
accurate the further from neutral it is used.
That 7.01 calibration solution was provided by me,
it was NOT included with the meter I purchased.
 

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Looks like it does the job... I may not be as accurate as some, but I think it looks better than some of the other options. Keep us informed on how it does over the next couple of weeks to see if it stays fairly accurate. This would be a great step up from manual testing and step closer to a SMS unit or similar.

Thanks for the new info :)
 

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why would i need to replace the electrode?
I know I have to clean and recalibrate it,
but what wears it out, and how quickly?
Hi Spy

You might already know this, but I'll throw it out anyway. There's several products on the market that will help your electrodes last a little longer.

pH probe storage solution - this is a KCl/distilled H2O solution to keep your electrodes wet when they are not in service. You can easily make this yourself. Make a strong KCl solution. Take a pimento cheese/chicken salad/slaw/etc container (one that's basically low and wide). Pour the solution in it, cut an "X" in the lid, put the lid on, then put the electrode through the "X" to keep it wet. The low and wide container is stable enough so that it won't turn over easily.

pH/ORP cleaning solution - this is a pepsin/HCl/distilled H2O solution that you soak the electrodes in for a few hours and then rinse with deionized water

http://www.aquaticeco.com/index.cfm/fuseaction/product.detail/iid/872
 

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no, you misunderstand.
a better pH meter has a separate screw set for 4/10 calibration.
without it, using 4pH or 10pH solution on this meter is pointless.
without 4/10 calibration capability, such a meter becomes less
accurate the further from neutral it is used.
That 7.01 calibration solution was provided by me,
it was NOT included with the meter I purchased.
gotcha. it would still let you know how far off you'd be at those varied pH's.
 
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